JPS566045A - Manufacture of cylinder head - Google Patents
Manufacture of cylinder headInfo
- Publication number
- JPS566045A JPS566045A JP8193179A JP8193179A JPS566045A JP S566045 A JPS566045 A JP S566045A JP 8193179 A JP8193179 A JP 8193179A JP 8193179 A JP8193179 A JP 8193179A JP S566045 A JPS566045 A JP S566045A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder head
- valves
- graphitizing
- molten metal
- space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000002184 metal Substances 0.000 abstract 4
- 229910052751 metal Inorganic materials 0.000 abstract 4
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910001018 Cast iron Inorganic materials 0.000 abstract 1
- 238000005087 graphitization Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
PURPOSE: To prevent occurrence of cracks at the portion of cylinder head located between valves, by graphitizing only said portion of cylinder head and the region near the portion, and thereby increasing the mechanical strength at the portion without affecting machinability and heat conductivity of the cylinder head.
CONSTITUTION: Mold 4 is composed of upper part 5, lower part 5' and core 6 and disposed such that land 3 to be formed at portion 2 of cylinder head 1 located between valves is directed upward. In space 2' defining the portion of cylinder head 1 located between valves or land defining space 3', a graphitizing agent 8 put in a metal container 7 that is fused by the heat of molten metal is fixed to core 6 by means of support 9, and molten metal of normal case iron is poured into sprue 11. The molten metal thus poured into sprue 11 is filled gradually upwards from space 1' and at last comes into contact with graphitizing agent 8, thereby promoting graphitization of the portion 2. Here, it is necessary that the amount of graphitizing agent is small so that graphitized cast iron is formed only at the region near portion 2. Expansion 3 is removed after it is used for collecting floating dross.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8193179A JPS598659B2 (en) | 1979-06-28 | 1979-06-28 | Manufacturing method of cylinder head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8193179A JPS598659B2 (en) | 1979-06-28 | 1979-06-28 | Manufacturing method of cylinder head |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS566045A true JPS566045A (en) | 1981-01-22 |
JPS598659B2 JPS598659B2 (en) | 1984-02-25 |
Family
ID=13760210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8193179A Expired JPS598659B2 (en) | 1979-06-28 | 1979-06-28 | Manufacturing method of cylinder head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS598659B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0132505A2 (en) * | 1983-07-28 | 1985-02-13 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Cylinder head made of a ferrous material |
JPS6481517A (en) * | 1987-08-19 | 1989-03-27 | Samsung Electronics Co Ltd | Elastic surface wave filter for eliminating ground to ground interference of sattelite communication |
-
1979
- 1979-06-28 JP JP8193179A patent/JPS598659B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0132505A2 (en) * | 1983-07-28 | 1985-02-13 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Cylinder head made of a ferrous material |
JPS6481517A (en) * | 1987-08-19 | 1989-03-27 | Samsung Electronics Co Ltd | Elastic surface wave filter for eliminating ground to ground interference of sattelite communication |
Also Published As
Publication number | Publication date |
---|---|
JPS598659B2 (en) | 1984-02-25 |
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